Subaru Legacy IV (2008 year). Manual - part 1076

GW-31

Rear Window Defogger System

GLASS/WINDOWS/MIRRORS

16.Rear Window Defogger 

System

A: WIRING DIAGRAM

<Ref. to WI-165, Rear Defogger System.>

B: INSPECTION

NOTE:
Rear window defogger system can be customized
on the center display touch screen or on the Suba-
ru Select Monitor.

1. CHECK WITH SUBARU SELECT 
MONITOR

CAUTION:
Check that the rear window defogger timer is in
initial setting or customize setting before per-
forming inspection.
1) Check the input signal when the rear window de-
fogger switch is operated using Subaru Select
Monitor.

(1) Prepare the Subaru Select Monitor.
(2) Turn the ignition switch to ON (engine OFF)
and run the “PC application for Subaru Select
Monitor”.
(3) On the «System Selection Menu» display,
select the {Integ. unit mode}.
(4) Select the {Current Data Display & Save}.
(5) Display the data of rear window defogger
switch.

2) After rear defogger switch is set to ON, check
whether it turns to OFF in 15 minutes or repeats 15
minutes operation and 2 minutes stop?
3) When it becomes OFF on above 2), it is normal.
When it repeats 15 minutes operation and 2 min-
utes stop, replace body integrated unit.

2. HEAT WIRE INSPECTION

CAUTION:
Use a dry and soft cloth when wiping dirt off the
glass. Move the cloth along the heat wire to
avoid damaging it.

1) Turn the ignition switch to ON.
2) Turn the defogger switch to ON.
3) Wrap the tips of tester probe with aluminum foil
to avoid damage to heat wire.

4) Measure the voltage at heat wire center with DC
voltmeter.

Standard voltage:

Approx. 6 V

NOTE:
• If the measured value is 12 V, heat wire is open
between heat wire center and positive (+) terminal
of tester probe.
• If it is 0 V, the circuit is open between heat wire
center and ground.
5) Connect the tester probe of positive lead of volt-
meter to positive terminal of heat wire and move
tester probe of negative lead along the heat wire up
to the negative terminal end. If voltage changes
from zero to several volts during movement of
tester probe, heat wire is open at the voltage
change point.

Symptom

Repair order

Rear window defogger 
does not operate.

1. Fuse (M/B No. 10) (F/B No. 22)
2. Rear defogger relay
3. Defogger switch
4. Rear defogger condenser
5. Defogger wire
6. Wiring harness
7. Body integrated unit

System name

Initial setting

Customize setting

Rear window 
defogger timer

OFF after 15 min.

Repeat 15 min. 
operation and 2 
min. stop.

(1) Tester probe

(2) Aluminum foil

(3) Heat wire

(4) Press

(1) Center of heat wire

Voltage

Criteria

Approx. 6 V

Normal

Approx. 12 V or 0 V

Open

GW-00076

(2)

(3)

(4)

(1)

GW-00077

(1)

GW-32

Rear Window Defogger System

GLASS/WINDOWS/MIRRORS

6) Repair the heat wire that determine the place of
the open circuit. <Ref. to GW-32, REPAIR, Rear
Window Defogger System.>

C: REPAIR

1) Clean the broken portion with alcohol or white
gasoline.
2) Mask both side of wire with thin film.
3) Apply the conductive silver composition (DU-
PONT No. 4817) to the broken portion.

4) After repair, check the wire.

(1) Broken portion

(2) Thin film

(3) Broken wire

(4) Conductive silver composition 

(DUPONT No. 4817)

GW-00078

(2)

(3)

(4)

(1)

GW-33

Rear Quarter Glass

GLASS/WINDOWS/MIRRORS

17.Rear Quarter Glass

A: REMOVAL

1. SEDAN MODEL

Remove the glass in the same procedure as for
windshield glass. <Ref. to GW-26, REMOVAL,
Windshield Glass.>

2. WAGON MODEL

Remove the glass in the same procedure as for
windshield glass. <Ref. to GW-26, REMOVAL,
Windshield Glass.>

B: INSTALLATION

1. SEDAN MODEL

1) Install the dam rubber.

2) Cut off the cartridge nozzle tip as shown and set
it in sealant gun.

3) Apply adhesive to the glass end surface as
shown.

(1) Locating pin

(2) Dam rubber

(1) Locating pin

(2) Dam rubber

(3) Fastener

GW-00332

(1)

(1)

(2)

(1)

(1)

(3)

(3)

(2)

GW-00761

(1) Dam rubber

(2) Molding

(3) 10.5 mm (0.413 in) (constant)

(4) Ceramic terminal

(1) 10 mm (0.39 in)

(2) 8 mm (0.31 in)

(1) Locating pin

(2) Dam rubber

(3) Adhesive

(4) Molding

(5) 8 — 10 mm (0.31 — 0.39 in)

GW-00411

(2)

(1)

(4)

(3)

GW-00494

(1)

(2)

(2)

60

GW-00764

(3)

(1)

(4)

(3)

(4)

(2)

(5)

(2)

GW-34

Rear Quarter Glass

GLASS/WINDOWS/MIRRORS

4) Install the glass in the same procedure as for
windshield glass. <Ref. to GW-27, INSTALLA-
TION, Windshield Glass.>
5) After completion of all work, allow the vehicle to
stand for about 24 hours.

NOTE:
• When door is opened/closed after glass is bond-
ed, always lower the door glass first, and then
open/close it carefully.
• Move the vehicle slowly.
• For minimum drying time and vehicle standing
time before driving after bonding, follow instruc-
tions or instruction manual from the adhesive man-
ufacturer.
6) After curing of adhesive, pour the water on exter-
nal surface of vehicle to check that there are no wa-
ter leaks.

NOTE:
When a vehicle is returned to the user, tell him or
her that the vehicle should not be subjected to
heavy impact for at least three days.

2. WAGON MODEL

1) Install the dam rubber.

2) Cut off the cartridge nozzle tip as shown and set
it in sealant gun.

(1) Dam rubber

(2) Ceramic terminal

(3) Molding

(4) 17.5 mm (0.69 in)

(5) 13.5 mm (0.53 in)

(6) 16.5 mm (0.65 in)

(1) 10 mm (0.39 in)

(2) 8 mm (0.31 in)

(3)

(1)

(4)

(5)

(6)

(2)

GW-00762

GW-00494

(1)

(2)

(2)

60